8-oxo-8-(4-n-propoxyphenyl)octanoic acid

5-(4-hexyloxyphenyl)-5-oxovaleric acid

7-(4-heptyloxyphenyl)-7-oxoheptanoic acid

6-(2,4-Dimethoxyphenyl)-6-oxohexanoic acid

7-(3,4-Dimethoxyphenyl)-7-oxoheptanoic acid

8-[4-(N,N-Dimethylamino)phenyl]-8-oxooctanoic acid

6-[3-(N,N-Dimethylamino)phenyl]-6-oxohexanoic acid

8-(2-Chloro-4-fluorophenyl)-8-oxooctanoic acid

6-(5-Chloro-2-methoxyphenyl)-6-oxohexanoic acid

6-[2-Chloro-4-(methylthio)phenyl]-6-oxohexanoic acid

4-(2-Chloro-6-fluorophenyl)-4-oxobutyric acid

5-(2,3,4,5-tetrafluorophenyl)-5-oxovaleric acid

7-(2,3,4,5-tetrafluorophenyl)-7-oxoheptanoic acid

5-(2,3,4-trimethoxyphenyl)-5-oxovaleric acid

6-(4-n-Butylphenyl)-6-oxohexanoic acid